STM32F103CB ‘Sleepy mode’ and ‘Wake up’ function

[myksj1105]

STM32F103CB ‘Sleepy mode’ and ‘Wake up’ function

[Status]
1. MCU: STM32F103CB
2. CORE1: https://github.com/rogerclarkmelbourne/Arduino_STM32
3. CORE2: https://github.com/stm32duino/Arduino_Core_STM32


hello.

We want to configure it with low power.
1. Enter ‘Sleepy Mode’ through firmware.
2. In terms of hardware, the ‘3.3V’ or ‘GND’ signal enables the ‘Wake up’ function.
3. The firmware re-enters ‘Sleepy mode’ after a certain period of time.

Are there any examples or libraries? help me.

[myksj1105]

#include "STM32LowPower.h"

Can I use the above library? 'STM32LowPower' ?

[ag123]

library is here
https://github.com/stm32duino/STM32LowPower
you need to use stm core for that

low power is not for novices, to do low power, the simplest way is to consult the reference manual and figure out how to do that from there.
in some low power modes, you need to trigger a reset after wake up from low power.

the simplest way to reduce power is to use

Code: Select all

asm("wfi");

when your code is not doing anything. you can put that in loop(), and that is good as delay(1)

for a properly designed app, stm32 can run for days on reusable AA or Lipo batteries without special low power modes.
and you can re-charge and use again.
normally, things like your leds etc can take more power than a stm32